### Home > AC > Chapter 13 > Lesson 13.OF1-S > Problem7-134

7-134.

Write the equation of each circle graphed below.

Recall the general equation of a circle: $\left(x − h\right)² + \left(y − k\right)² = r²$where $\left(h, k\right)$ is the center of the circle and $r$ is the radius.

1. Write in graphing form:
($(x − 1)^{2} + y^{2} = 9$